diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.9/303-add-devm_alloc_percpu-support.patch')
| -rw-r--r-- | target/linux/layerscape/patches-4.9/303-add-devm_alloc_percpu-support.patch | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/target/linux/layerscape/patches-4.9/303-add-devm_alloc_percpu-support.patch b/target/linux/layerscape/patches-4.9/303-add-devm_alloc_percpu-support.patch deleted file mode 100644 index a8573cce00..0000000000 --- a/target/linux/layerscape/patches-4.9/303-add-devm_alloc_percpu-support.patch +++ /dev/null @@ -1,125 +0,0 @@ -From d33bde3c487c722541ad359e1d22090a78df0c77 Mon Sep 17 00:00:00 2001 -From: Zhao Qiang <qiang.zhao@nxp.com> -Date: Tue, 11 Jul 2017 16:47:18 +0800 -Subject: [PATCH] add devm_alloc_percpu support - -Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com> ---- - drivers/base/devres.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++ - include/linux/device.h | 19 +++++++++++++++ - 2 files changed, 85 insertions(+) - -diff --git a/drivers/base/devres.c b/drivers/base/devres.c -index 8fc654f0807b..71d577025285 100644 ---- a/drivers/base/devres.c -+++ b/drivers/base/devres.c -@@ -10,6 +10,7 @@ - #include <linux/device.h> - #include <linux/module.h> - #include <linux/slab.h> -+#include <linux/percpu.h> - - #include "base.h" - -@@ -985,3 +986,68 @@ void devm_free_pages(struct device *dev, unsigned long addr) - &devres)); - } - EXPORT_SYMBOL_GPL(devm_free_pages); -+ -+static void devm_percpu_release(struct device *dev, void *pdata) -+{ -+ void __percpu *p; -+ -+ p = *(void __percpu **)pdata; -+ free_percpu(p); -+} -+ -+static int devm_percpu_match(struct device *dev, void *data, void *p) -+{ -+ struct devres *devr = container_of(data, struct devres, data); -+ -+ return *(void **)devr->data == p; -+} -+ -+/** -+ * __devm_alloc_percpu - Resource-managed alloc_percpu -+ * @dev: Device to allocate per-cpu memory for -+ * @size: Size of per-cpu memory to allocate -+ * @align: Alignment of per-cpu memory to allocate -+ * -+ * Managed alloc_percpu. Per-cpu memory allocated with this function is -+ * automatically freed on driver detach. -+ * -+ * RETURNS: -+ * Pointer to allocated memory on success, NULL on failure. -+ */ -+void __percpu *__devm_alloc_percpu(struct device *dev, size_t size, -+ size_t align) -+{ -+ void *p; -+ void __percpu *pcpu; -+ -+ pcpu = __alloc_percpu(size, align); -+ if (!pcpu) -+ return NULL; -+ -+ p = devres_alloc(devm_percpu_release, sizeof(void *), GFP_KERNEL); -+ if (!p) { -+ free_percpu(pcpu); -+ return NULL; -+ } -+ -+ *(void __percpu **)p = pcpu; -+ -+ devres_add(dev, p); -+ -+ return pcpu; -+} -+EXPORT_SYMBOL_GPL(__devm_alloc_percpu); -+ -+/** -+ * devm_free_percpu - Resource-managed free_percpu -+ * @dev: Device this memory belongs to -+ * @pdata: Per-cpu memory to free -+ * -+ * Free memory allocated with devm_alloc_percpu(). -+ */ -+void devm_free_percpu(struct device *dev, void __percpu *pdata) -+{ -+ WARN_ON(devres_destroy(dev, devm_percpu_release, devm_percpu_match, -+ (void *)pdata)); -+} -+EXPORT_SYMBOL_GPL(devm_free_percpu); -diff --git a/include/linux/device.h b/include/linux/device.h -index bc41e87a969b..0a2135cbddc9 100644 ---- a/include/linux/device.h -+++ b/include/linux/device.h -@@ -686,6 +686,25 @@ void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res); - int devm_add_action(struct device *dev, void (*action)(void *), void *data); - void devm_remove_action(struct device *dev, void (*action)(void *), void *data); - -+/** -+ * devm_alloc_percpu - Resource-managed alloc_percpu -+ * @dev: Device to allocate per-cpu memory for -+ * @type: Type to allocate per-cpu memory for -+ * -+ * Managed alloc_percpu. Per-cpu memory allocated with this function is -+ * automatically freed on driver detach. -+ * -+ * RETURNS: -+ * Pointer to allocated memory on success, NULL on failure. -+ */ -+#define devm_alloc_percpu(dev, type) \ -+ ((typeof(type) __percpu *)__devm_alloc_percpu((dev), sizeof(type), \ -+ __alignof__(type))) -+ -+void __percpu *__devm_alloc_percpu(struct device *dev, size_t size, -+ size_t align); -+void devm_free_percpu(struct device *dev, void __percpu *pdata); -+ - static inline int devm_add_action_or_reset(struct device *dev, - void (*action)(void *), void *data) - { --- -2.11.1 - |